York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...
Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More
Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...
Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More
Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...
Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More
Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...
Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More
Springdale Bridge, Federal Aid Secondary Route 563, Springdale, Park C...
Significance: The bridge is significant for its associations with the development of transportation systems to accommodate settlement and tourism in the early 20th century; and as an example of the work of the ... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
Springdale Bridge, Federal Aid Secondary Route 563, Springdale, Park C...
Significance: The bridge is significant for its associations with the development of transportation systems to accommodate settlement and tourism in the early 20th century; and as an example of the work of the ... More
Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...
Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More
Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...
Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More
Springdale Bridge, Federal Aid Secondary Route 563, Springdale, Park C...
Significance: The bridge is significant for its associations with the development of transportation systems to accommodate settlement and tourism in the early 20th century; and as an example of the work of the ... More
Springdale Bridge, Federal Aid Secondary Route 563, Springdale, Park C...
Significance: The bridge is significant for its associations with the development of transportation systems to accommodate settlement and tourism in the early 20th century; and as an example of the work of the ... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...
Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More
Springdale Bridge, Federal Aid Secondary Route 563, Springdale, Park C...
Significance: The bridge is significant for its associations with the development of transportation systems to accommodate settlement and tourism in the early 20th century; and as an example of the work of the ... More
Springdale Bridge, Federal Aid Secondary Route 563, Springdale, Park C...
Significance: The bridge is significant for its associations with the development of transportation systems to accommodate settlement and tourism in the early 20th century; and as an example of the work of the ... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
Springdale Bridge, Federal Aid Secondary Route 563, Springdale, Park C...
Significance: The bridge is significant for its associations with the development of transportation systems to accommodate settlement and tourism in the early 20th century; and as an example of the work of the ... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...
Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More
Springdale Bridge, Federal Aid Secondary Route 563, Springdale, Park C...
Significance: The bridge is significant for its associations with the development of transportation systems to accommodate settlement and tourism in the early 20th century; and as an example of the work of the ... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...
Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More
Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...
Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More
Springdale Bridge, Federal Aid Secondary Route 563, Springdale, Park C...
Significance: The bridge is significant for its associations with the development of transportation systems to accommodate settlement and tourism in the early 20th century; and as an example of the work of the ... More
Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...
Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More